(But you cannot flash the computer's BIOS that way.) There is also DOSBox, an x86 emulator with DOS. But we can expect that in the future many PC computers will be delivered with UEFI/BIOS systems that boot only in UEFI mode.Ī workaround to run FreeDOS would be to install it in a virtual machine and set this virtual machine to boot in BIOS mode alias CSM alias legacy mode. Handle (they are hard-coded to 512-byte sectors).Īlmost all UEFI systems today (2021) can boot also in BIOS mode alias CSM alias legacy mode. Hard disk manufacturers are already (2010 and later)Ĭoming out with hard disks with large sectors, which BIOS does not
UEFI uses a GPT table instead of the MBR. Many motherboard manufacturers are replacing BIOS+MBR with UEFI+GPT. FreeDOS assumes a BIOS, and does not work Note that many new (2010 and later) computers boot using UEFI, which UEFI is an acronym for Unified Extensible Firmware Interface. The FreeDOS wiki page /wiki/index.php/UEFI tells us that it does not work: FreeDOS assumes a BIOS, and does not work with UEFI
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